In: Chemistry
Differentiate between molar mass, equivalent mass, number of moles and number of equivalents with examples as related to electrochemistry.
Equivalent mass = molar mass/no of electrons
one faraday electricity passed through electrolyte to form equivalent mass of substance is deposite at electrodes
Cu^2+ + 2e^- --------------> Cu
2F
equivalent mass of Cu = atomic mass of Cu/no of faraday
= 63.5/2 = 31.75 g
no of moles = mass of substance/gram molar mass
no of equivalents = gram molar mass/basicity of acid or acidity of base